While hosting an event with Tampax and Always, the singer straight up told us: "I wish 'Bang Bang' had been mine." She added, "I loved singing that song because I felt like I was able to show off my vocals."

Girlfriend also proved she could wind it with the best of them. Check out her sexy moves at the 2:00 mark.

"Jessie was so awesome about it," Demi continued. "She was super sweet. We had fun performing it."

Currently, Demi is working hard on her fifth album. Will Jessie J, who pennedMiley Cyrus' massive hit "Party in the USA," contribute a song to the record? "That would be awesome! I would love that," she said.

So would we! Another women's anthem would really get our #BUILTBYGIRLS mojo going!

But back to songs Demi feels she missed out on. She admitted to us that - and this shouldn't come as a surprise to Lovatics since she's covered it a bunch - she wished Rihanna's "Stay" was part of her catalog.

While we love us some RiRi, Demi's range simply slays. Press play on the video below to see for yourself.

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